-LRB- CNN -RRB- A pair of dramatic raids Friday in France led to the killing of three terrorists -- one suspected in the fatal shooting of a policewoman and four hostages , the other two in the massacre at the offices of Charlie Hebdo magazine -- and to the freeing of more than a dozen people being held hostage .

The French government 's work is not over . There 's still a lot of healing to do , a lot of questions to answer about how to prevent future attacks , and the pursuit of a woman wanted in the policewoman 's shooting .

Still , as Interior Minister Bernard Cazeneuve said , `` The nation is relieved tonight . ''

Latest updates at 8 p.m. ET

• The wife of suspect Cherif Kouachi and the girlfriend of hostage taker Amedy Coulibaly -- Hayat Boumedienne -- exchanged 500 phone calls in 2014 , according to Paris prosecutor Francois Molin . The wife told investigators that Cherif and Coulibaly knew each well .

• Cherif Kouachi , a suspect in the Charlie Hebdo slaughter , visited Yemen in 2011 and French authorities were aware of his contacts with terrorist organizations in Yemen and Syria , Molins said at a press conference .

• The government of Yemen has launched an investigation into a possible al Qaeda in the Arabian Peninsula link to the Charlie Hebdo magazine attack , Mohammed Albasha , Yemen 's spokesman in Washington , tweeted Friday .

• Al Qaeda in the Arabian Peninsula has claimed responsibility for orchestrating the deadly terrorist attack on the Paris offices of Charlie Hebdo , the founder of the magazine The Intercept , Jeremy Scahill , told CNN . CNN has not independently confirmed this claim .

• Four hostages were killed and 15 survived in the standoff between an armed terrorist and police at a Paris kosher grocery store on Friday , according to Israeli government sources who characterized a phone conversation between Israeli Prime Minister Benjamin Netanyahu and French President François Hollande .

• U.S. President Barack Obama said he wants the people of France to know that the United States `` stands with you today , stands with you tomorrow '' after this week 's terror . He told a crowd in Tennessee that `` we stand for freedom and hope and dignity of all human beings , -LRB- and -RRB- that 's what Paris stands for . ''

• The FBI and U.S. Department of Homeland Security issued a bulletin to law enforcement across the United States discussing the Paris terrorist attack this week and the sophistication of the tactics , a U.S. law enforcement source told CNN . The bulletin says the attacks demonstrated `` a degree of sophistication and training traditionally not seen in recent small armed attacks , '' the official said .

• A man claiming to be Amedy Coulibaly , the suspected hostage-taker at the Paris grocery store , told CNN affiliate BFMTV that he belonged to the Islamist militant group ISIS . CNN can not independently confirm the authenticity of the recording .

Charlie Hebdo attackers holed up in print shop

The day 's drama began in Dammartin-en-Goele , where brothers Cherif and Said Kouachi ended up in a print shop in an industrial area .

A salesman , who identified himself only as Didier , told France Info radio that he shook one of the gunman 's hands at about 8:30 a.m. as they arrived at the business . Didier said he first thought the man , who was dressed in black and heavily armed , was a police officer .

As he left , the armed man said , `` Go , we do n't kill civilians . '' Didier said , `` It was n't normal . I did not know what was going on . ''

The gunmen told police that they wanted to die as martyrs , Yves Albarello , who is in France 's Parliament , said on channel iTele . The area , meanwhile , was locked down -- with children stuck in schools , roads closed and shops shuttered .

Shortly before 5 p.m. , gunshots and at least three large explosions pierced the relative silence . .

Soon after , men could be seen on the roof of the building where the brothers had holed up . Four helicopters landed nearby .

Word came that the brothers were dead and that a man who had been hiding in the building was safe , said Bernard Corneille , the mayor of nearby Othis .

Hostages at kosher grocery store

At the same time , in a different setting near Paris 's Porte de Vincennes about 40 kilometers -LRB- 25 miles -RRB- away , a similar crisis played out at a kosher store .

Amedy Coulibaly -- the same man who , authorities said , is suspected with Hayat Boumeddiene of killing a policewoman Thursday south of Paris -- on Friday took a number of hostages there . Boumeddiene remains at large .

Like Cherif Kouachi , a man claiming to be Coulibaly called BFMTV on Friday . At the scene , witnesses heard Coulibaly demand freedom for the Kouachi brothers , according to police union spokesman Pascal Disand .

Law enforcement swarmed the area . Dozens of schools went on lockdown .

A resolution came a few minutes after the Dammartin-en-Goele climax , in the form of explosions and gunfire . Up to 20 heavily armed police officers moved into the store . They came out with a number of civilians .

Not everyone made it . Hollande said four people were killed . Israeli government sources told CNN that Hollande told Netanyahu that four hostages were killed and 15 were rescued . Molins said four hostages were killed by the gunman before police stormed the market .

Father : ` It 's like a war '

In a speech Friday night , Hollande called the Porte de Vincennes deaths an `` anti-Semitic '' act .

He urged his countrymen not to respond with violence against Muslims , saying , `` Those who committed these acts have nothing to do with the Muslim religion . ''

`` Unity '' he said , `` is our best weapon . ''

That kind of military language is apt when you 're talking about two deadly attacks and violent standoffs in a few days .

It 's something that a man , who asked to be called simply Teddy , understands . He was outside Henri Dunant elementary school in Dammartin-en-Goele on Friday , hoping to pick up his young son .

And , eventually , the students did leave the school -- accompanied by police officers who held their hands and , in some cases , lifted them onto an awaiting bus that would take them to safety .

`` It 's like a war , '' Teddy said . `` I do n't know how I will explain this to my 5-year-old son . ''

Parts of France on high alert

This `` war '' erupted two days ago , when a pair of heavily armed men -- hooded and dressed in black -- entered the Paris offices of Charlie Hebdo , the satirical magazine known for its provocative , often profane , take on religion , politics and most anything else .

Satirical magazine is no stranger to controversy

They burst into a meeting , called out individuals , and then executed them . The dead included editor and cartoonist Stephane Charbonnier and four other well-known cartoonists known by the pen names : Cabu , Wolinski , Honore and Tignous .

Authorities followed a lead Thursday morning from a gas station attendant near Villers-Cotterets , about 40 kilometers -LRB- 25 miles -RRB- from Dammartin-en-Goele , whom Cherif Kouachi , 32 , and Said Kouachi , 34 , reportedly threatened as they stole food and gas . Police think the brothers may have later fled on foot into nearby woods .

Ties to Islamist extremists

As the suspects moved , the French government -- including more than 80,000 police deployed across the country -- also did n't stand still .

Some of them tried to prevent more bloodshed , which might have something to do with nine people detained after the Charlie Hebdo attacks . Investigators also dug to learn about the attackers .

Who are the suspects ?

Both men had ties to Islamist extremists .

Said , the elder of the Kouachi brothers , spent several months in Yemen in 2011 , receiving weapons training and working with al Qaeda in the Arabian Peninsula , according to U.S. officials .

His younger brother , Cherif , has a long history of jihad and anti-Semitism , according to documents obtained by CNN . In a 400-page court record , he is described as wanting to go to Iraq through Syria `` to go and combat the Americans . ''

`` I was ready to go and die in battle , '' he said in a deposition . '' ... I got this idea when I saw the injustices shown by television . ... I am speaking about the torture that the Americans have inflicted on the Iraqis . ''

Cherif was a close associate of Coulibaly , a Western intelligence source told CNN .

A man claiming to be Cherif told CNN affiliate BFMTV in a phone call before he was shot and killed Friday that he was sent to carry out the massacre by al Qaeda in Yemen and that the late Anwar al-Awlaki financed his trip . CNN can not independently confirm the authenticity of the recording .

Al-Awlaki , an American-born Muslim scholar and cleric who acted as a spokesperson for al Qaeda in the Arabian Peninsula , was killed in 2011 by a CIA drone strike .

Cherif and Coulibaly were involved in a 2010 attempt to free an Algerian incarcerated for a 1995 subway bombing . Coulibaly was arrested with 240 rounds of ammunition for a Kalashnikov rifle and a photo of Djamel Beghal , a French Algerian once known as al Qaeda 's premier European recruiter .

The Western intelligence source said that Coulibaly lived with Boumeddiene , his alleged accomplice in the police shooting , and that the two traveled to Malaysia together .

Charlie Hebdo columnist : ` They did n't want us to be quiet '

A unity rally will be held Sunday `` celebrating the values behind '' Charlie Hebdo , said British Prime Minister David Cameron , who will travel to Paris to attend .

And the magazine itself -- whose former offices were firebombed in 2011 , on the day it was to publish an issue poking fun at Islamic law and after it published a cartoon of the Muslim Prophet Mohammed -- will go on as well , even without its leader and most talented staffers . It 's set to publish thousands of copies of its latest edition next Wednesday .

Patrick Pelloux , a columnist for the magazine , told CNN that `` I do n't know if I 'm afraid anymore , because I 've seen fear . I was scared for my friends , and they are dead . ''

He and many others are defiant .

`` I know that they did n't want us to be quiet , '' Pelloux said of the slain Charlie Hebdo staffers . `` They would be assassinated twice , if we remained silent . ''

CNN 's Jim Sciutto , Ben Brumfield , Atika Shubert , Laura Smith-Spark , Richard Greene , Fred Pleitgen , Christiane Amanpour , Jim Bittermann and Bryony Jones contributed to this report .

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Four hostages killed , prosecutor says

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Forces kill the 2 brothers suspected in the Charlie Hebdo attack

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A terror suspect who took over a kosher market and killed four hostages was also killed